while the diagram seems to be centered (as seen by the caption), the tree inside is not. The narrower the tree, the farther to the right it is positioned. Any thoughts?
Here's my code
\documentclass[oneside,11pt,titlepage,a4paper,american,bibliography=totocnumbered,listof=numbered]{scrbook}
\usepackage{tree-dvips}
\usepackage{qtree}
\usepackage{newfloat}
\begin{document}
\begin{diagram}[!ht]
\begin{center}
\Tree [.Root
[.\node{I}{Internal} Research Sales ]
[.\node{T}{TU Berlin} Research ]
[.\node{C}{Charite} Research Sales ]
[.\node{D}{...} Research Sales ]]
\caption{A Purpose Graph with Multiple Relevant Utilizer Distinctions}
\label{dia:mixed_tree}
\end{center}
\end{diagram}
In contrast, using a clear distinction of purposes and utilizers, we end up with a much more well-structured set of trees with less duplicates (as seen in diagrams \ref{dia:split_tree_purpose} and \ref{dia:split_tree_utilizer}):
\vspace*{0.5cm}
\begin{diagram}[!ht]
\begin{center}
\Tree [.Root
[.\node{M}{Medical} Research Sales ]]
\caption{A Purpose Tree in a Model with Separate Purpose and Utilizer Trees}
\label{dia:split_tree_purpose}
\end{center}
\end{diagram}
\begin{diagram}[!ht]
\begin{center}
\Tree [.Root Internal
[.\node{U}{Universities} \node{B}{TU Berlin} Charite ]
[.Hospitals \node{C}{Charite} ]]
\caption{A Utilizer Tree in a Model with Separate Purpose and Utilizer Trees}
\label{dia:split_tree_utilizer}
\end{center}
\end{diagram}
\end{document}
\begin{diagram}
?\node
syntax.